Loader



Mar. 3, 1925.

E. G. GAR-rm LOADER Filed Feb. -18. 1920 jleets-Sheet l Mar. 3, 1925.

E. G. GARTIN LOADER Filed Feb. 18. 1920 2 Sheets-Sheet 2 Patented Mar. 3, 1925.

KUNITED STATES PATENT OFFICE.

`VIidffllLlZElE'. G. GARTIN, 0F CLAREMONT, NEW HAMPSHIRE, ASSIGNOR T0 SULLIVAN MA- CHINERY COMPANY, A CORPORATION F MASSACHUSETTS.

LOADER.

Application 1ed February 1'8, 1920. Serial No. 359,618.

T o al? whom it may concern:

Be it known that I, ELMER Gr. GARTIN, a citizen of the United States residing at Claremont. in the county of Sullivan and State of New `Hampshire, have invented certain new and useful Improvements in Loaders, of which the following is a full, clear, and exact specification.

My invention relates to loaders.

Its objectis toprovide an improved loading machine. Another object of my invention is'to provide an improved and simplified form of loader adapted for general use. A, further object of my invention is to provide an improved type of loader in which the moving parts will be reduced to a minimum number. A further object. of my invention is toprovide an improved loader in which a wide range .of angular movement of the loading mechanism will be possible. Further objects of my invention -will appear in the course of the description thereof. In the accompanying drawings I have shown, for purposes of illustration two forms which my invention may assume'in practice.

`Fig. 1V is a side elevation of the illus trative embodiment of my improved loading machine showing in full lines the parts in position for filling the scoop and, in dotted lines, the parts' in other positions.

Fig. 2 is a view partially in section and partially in elevation with parts broken away showing the details` of construction of my improved loading mechanism.

Fig. 3 is a transverse section through the` vloading' mechanism on line 3 3 of Fig. 2.

Fig. 1 is a rear end elevation of the cylin-y der and control mechanism therefor. l

Fig. 5 is a fragmentary elevational view of an illustrative embodiment of my loader provided with a different type of bucket mounting.V A

I have shown, in Fig. 1, my loader arranged upon a truck 1 consisting of a truck body 2 ymounted on the usual wheels B-- and provided upon its upper surface with a turntable 4, the truck body'being provided .at its rear end with a member generally in-l dicated'by 5 whose function is to permit forward feedingl of the truck while holding it against backward movement. l

My improved loadingmechanism consists generally of threey parts: y the" bucket, fthe I dumping and loading mechanism for the bucket, `and the motor, herein a fluid pressure motor, which is employed to actuate the loading and dumping mechanism of the bucket. `Arranged adjacent the rear end of a platform member 6, which is secured to the upper member 4 of the turntable, is a cylinder generally indicated by 7 in which there is reciprocable a piston 8 which is acted on by fluid pressure admitted alternately to opposite ends of the cylinder through a suitable port system under control ofa valve 9. The piston' 8 actuates a piston iod 10 which carries at its forward end a combined cross head and bearing member 11. This member has two side members 12-12, which' are slidable, as indicated at 13, in guides 14" formed upon the base member G and a cross rod 15 is arranged between the tops of these members as a brace and for a purpose hereinafter described. Bearings 17 are provided in the opposite sides of the cross head member and 'in these is rotatably mounted a shaft 18 to-y which is keyed at aboutfthe middle of its length a pinion 19,v the pinion and shaft being enclosed above by means ofl a cover member 2O held in position on the cross head member. In order to cause a swinging and dumping action of my bucket, there are secured I at the outgr ends of the shaft 18 by any suitable me'ns, here shown as keys 22, the power arms which swing and advance and retracty the loader bucket 26. Cooperating with the power arms 25 are what may be termed dumping rods 27 which are pivoted on the cross rod 15 outside of the side members 12, these dumping rods being connected to the top of the bucket member 26 substantially in vertical alinement with the pivot of the arms 25. As indicated in Fig. 1. rotation of the power arm '25 about the axis of the shaft 18 will cause the bucket to malntain subs-tantially its initial position for a considerable portion of its travel but thereafter will cause a rapid Vthereof in such `manner as to dump 1t into tipping -form of connection between the pinion shaft 18 and the bucket, or material moving ele. ment. In this fgure'l have Shown the arms secured as before tothe shaft 18, and

have shown ,them secured at 44 to a ,bucket v 'The pinion 19 cooperates with a rack 31 which is mounted in guides 32 formed centrally in the base" member 6, lthese guides being adapted to` permitI sliding of the rack therein. The guides 32 are provided atftheir -rear end with an abutment member 33 adapted to limit the rearward travel of the rack and/the rack is provided at its front end with a pin lock 34 whichfis con-.-

trolled by abell crank lever 35 having a slotted connection in its. horizontal arm with a pin 36 arranged in the top of pin 34 and so arranged that its vertical arm 37 will be struck by the front end of the cross head member. `The pin 34 is adapted to cooperate with' a 'holev 38`formed in the bottom of the rack guide to prevent forward movement of the rack except at the time when the pin is retracted`Y This pin occupies the hole 38 at the ,time'when the rack at its rearward end abuts the stop member 33. Arranged at the extreme I forward endL of the rack is a stop member 39 adapted to be engaged bythe cross head at the forward end of its travel, and, the locking pin 38 having been released, to cause the rack to be carried forward with the cross head. f It will thus 'be understood that the pinion duringa portionof the piston stroke will vroll upon the rack 31 but during the remainder of the forward V stroke Will no longer rotate, but both rack and piston will move forward together in fixed relationship. Arranged in suitable position adjacent the cylinder 7 to be struck Lare held in by the bucket arm 25 at its extreme rearward movement are buffer supports 40 relative to which a cross arm 41 may move, this' movement being resisted by springs 42 which position with. respect to the bumper supports by means of bolts 43 slidably tteddn the heads of the latter and se- Icured to the cross arm 41.

Theoperation of my improved loading mechanism is as `follows: Assuming the parts to be in theposition indicated by the right dotted position of the pinion and cross head in Fig. 2, compressed air or other suitablle operating iuid admitted to the right hand end of the cylinder 7 ,will cause the piston 8 to move forward, thereby causing, by means ofthe piston rod 10, the forward movement of the cross head 11. As the rack at this time is held xed at the right hand end of its guide by the locking pin 34 ycooperating with thehole 38 the pinion will be rotated and will roll along the face of the rack in such manner as lto swing thc bucket, which is initially at its extreme rearbe loaded. 'I

vward or dumping position about the axis ofthe pinion as a p-ivot and cause it, at

approximately the moment when the cross head reaches the position shown in full lines in Fig. 2 to occupy the lower or loading position shown in full lines in Fig. l. Upon moyement of the piston 8.beyondthe posimovement. At the moment when the pin clears its socket, the cross head comes firmly against the stop member ,539 and picking up the rack moves it bodily forward, accordingly forcing the bucket into the pile of material to be loaded, further lowering of the bucket being prevented by the locked position of the parts in the front end of the rack. I'Vhen the rack has reached the forwardend of its motion and the piston 8 is at the left hand end'of `the cylinder, the operator, by shifting the valve 9, will admit air to the left hand end of the cylinder 7 and exhaust the right hand end thereof,'thereby causing a reversal of movement of the piston. It will be noted that the bucket 26 is now heavily loaded and that it has a powerful leverage as compared with the pinion 19 on the shaft 18, the weight of the bucket and its load `providing a very strong turning moment in a counter-clockwise direction. Accordingly the pinion 19 in order to roll along the rack 31 would have to overcome this turning moment and as the rack is free to slide, it will be obvious that the first motion 4that will result will be the return of the rack to the first position shown in full lines in Fig.'2. Thereafter, further motion of translation of the rack being impossible, the force.exerted by the pressure admit-ted to the piston 8 and transmitted to the cross' head will cause the pinion to roll along the rack and elevate the load in such manner as to dump it at the appropriate-time by the cooperation of the arms25 and 27. After the dumping of the bucket, the positionof the valve 9 will be reversed and the operation repeated. It will be understood that. the weightof the bucket 26 combined with its leverage due tothe length of the arm 25- will be sufficient to cause rearward movement of the rack 31 prior to rolling of the pinion 19 upon the rack even if thc machine is operated out of reach of the material to In the event that I use the bucket attachment means shown in Fig. 5, it will be obvious that the general operation will be the same, save that the bucket 26 will not pivot about its attachment to the arms 25'; instead dumping without such action.

From the foregoing description' of my improved construction it will be obvious that I have provided an extremely simple ing element and rigidly to said first meni usiamol mechanism for `the purpose of mechanically loading a suitable carrier with any material capable of' being handled by means of a shovel. The moving parts are few in numbe'rfof gre-at strength, and are posi-V tive in operation.

1While I have in this application specifically described two forms which my invention may Vassume in' practice, it willbe understood thati-these forms of the same are shown for purposes of illustration and that the invention may be modified and embodied in other forms without departing from its spirit or the scope of the appended claims.

1il/That' l claim as new and desire to secure by Letters Patent is:

l. ln a loading machine, a bodily movable supporting frame, a material moving ele- .nien't, and means for giving the said element a rectilinear forward and rearward movement and a swinging movement over Athe machine to dumping position, comprising a pair of cooperating forwardly and rearwardly movable members one of which vis angular-ly movable with respect to the other, a pivoted arm connected to said last mentioned member adapted to be swung during relative movement of said members, and .a common power means for'causing bot-h simultaneous and relative ,movement of said members.

2. lin a loading machine, a frame adapted for transportation .and movement relative to the material to be loaded, a material moving element, and means lfor giving the said element aforwardI land rearward movement and a swinging movement over the machine to dumpingv position comprising a pair of -cooperating forwardly and rearwardly n'iovable members which are movable simultaneously or one independently of and angularly relative to the other,

said independently movable member having a range of movement greater than that of 'the other,` and a pivoted arm connected to said material movmgelement and in non-1'0- tative relation to one of said'-inovable members.

S. in a loading machine, a frame adapted for tansportation and movement relative tothe material to be loaded, a material moving element, and means for-giving said element a forward and rearward movement and a swinging movement over the mach-ine to dumpingv `position comprising two c0- operating movable parts one of which -rhas a preliminary lmotion of translation accompanied by angular movement 'about an axis within said part with respect to .the other, `which is followed bv a commonmovement of translation by bot-h of said parts and a' pivoted arm connectedjto the material movtioned part.

, and a swinging movement over the machine to dumping position comprising a plurality of cooperating members the first of which is adapted to roll along the other while the other lies stationary, and both of which are adapted thereafter to partake of simultaneous translation and a pivoted arm connected to said material moving element and rigidly to said rotating member.

. 5. ln a loading machine, a frame, a material moving element,"a1 id means for giving said element a forward and rearward movement and a swinging movement over the machine to dumping position comprising a rack, holding means therefor, a' pinion` an. arm connecting said pinion with said material moving element, and means for causing said pinion to rotates. along said rack, said means causing release of said holding means and thereafter causing simultaneous movement of said pinion and said` rack. 6. In a loading machine, a frame, a material movingelement, and means for giving said element a forward and rearward move- -ment and a swinging movement over the machine to dumping position comprising a pair of forwardly and rearwardly movable members oneiof which has a greater range of movement than the other, means to lock the second mentioned member during the initial n'iovement of said first mentioned member, means "for releasing said lock at the completion of the movement of said first mentioned, member, and means whereby said members are thereafter moved together and -a pivoted arm connected to the material moving element and to said first mentioned p element.

7. In a loading machine, a frame, a material moving element and means for giving 'said element a forward and rearward movementl and a swinging movement over the'.

izo

the end thereof whereby said, pinion moving means may moveboth said rack and said .pinion simultaneously.

8.- n a Vloading machine, a frame-adapted for transportation and movement relative to theinaterial to be loaded, a material'movying element, and means for giving said element a forward and rearward movement and a swinging movement over the machine to 4 able in said frame,

l e. cross head to release dumping position comprising a rack slida pinion adapted to cooperate with said rack, an arm connecting said pinion to said material moving element, a cross head in which said pinion is journaled, and means forcausing movement of said cross head whereby-said pinion is first rotated in moving along said-rack and thereafter. saidv pinion and said rack are given a simultaneous motion of translation. 9. In a loading machine, a frame, a material moving element, and means for giving said element a forward and rearward movement and' a swinging movement over the machine to dumping position comprising a` rackslidahle with .respectv to said frame, means for holding said rack in Xed position, a Vpinion cooperating with said rack,

a cross head in which, said pinion isv journaled, an arm connecting said material ymoving element with with said cross head, and `means for moving said cross head to cause said pinion to roll along said rack and subsequently cause said said locking means and move said rack and pinion simultaneously. 10. In a loading machine, a frame, a naterial moving element, and means for giving said element a forward and rearward move ment and a swinging movement. over the machine to dumping position comprising a rack slidable with respect to said frame',

means for holding said rackin xed posi-l tion, a pinion cooperating with said rack,

an arm connecting said material moving element with said pinion, a cross head in which said pinion is journaled, guides for said and meansfor to roll along said rack and subsequently cause said cross head to release said I means and to movesaid rack and pinion simultaneously. c

11. In a loading machine, a bodily movable supporting frame, a material. moving element, and means' for giving said element a' rectilinear forward and rearward movement and a. swinging movement over the i machine to and from dumping position comprising a pair of cooperating forwardly and rearwardly movable members, one vof which is angularlyk movable with respect to the other, and `a pivoted arm rigidly connected to said last mentioned lmember, said members cooperating during simultaneous movement to ei'ect the rectilinear movements of the f naterial moving` element and during relative movementsto swing said element.

12. In a loading machine, abodily movable supporting frame, a materialmoving element, and means for giving said element filling and withdrawing movements and' dumping and returnA movements comprising a pair of cooperating. forwardly and p saidpinion, an connecting said material moving elementlocking Y 1,528,540 .i l

element, and means filling and Y withdrawing movements and dumping and return movements comprising a pair of cooperating forwardly and rearwardly movable members adapted to move simultaneously and one of which is also an-` gularly movable while the othenis stationary, a pivoted arm rigidly connected lto one of said members, and means whereby that member which is movable while the other is stationary controls the movement in one direction of 4the other, the' opposite movement of said last mentioned member being controlled by the weight of the material moving element.

14. In a loading machine, a frame adaptof said members, and means` abodily movable .supporting frame, a material movingy for giving said` elements ed for transportation and movement relative to the material tol be loaded, a material moving element, and means for giving said element forward and rearward movements and a swinging movement to and from vdumping position comprising a pair of cooperating members adapted for simultaneous movements and one for angular movements independently of the other, and apivoted arm rigidly conected able supporting frame, a materialinoving element, and means for giving said element forward and rearward movements and swinging movements to and from dumping position comprising a pair of coperating forwardly and rearwardly movable meinbers, one of which is -angularly movable .with respect to the other, and a pivoted arm rigidly connected to lsaid last mentioned member and to said material moving element, said member which is movable with respect to the other having-an initial sole movement which .is followed by a common movement of said members during movement from dumping position to'illed posi- -tion of said .material moving element and said sequence of movements being reversed on the dumping movement of said material moving element.

16T In a loading machine, a bodily movable suporting frame, a material moving element in the form of a shovel, a sliding member, and a rotatable member cooperating therewith and supported thereby, said mate,

lim

to said mate'- rial moving element and to one of said movrial moving element having an arm rigidly connected to said rotatable member.

1T. In a loading machine, a bodily movable supporting frame, reciprocating coop- @rating gear and raclr elements, anda material moving element rigidly connected to said gear element, said material moving element being adapted to reciprocate withsaid gear and rack elements and to rotate with said gear element.

18. In a loading machine, a bodily movable supporting frame, a material moving element, reciprocating cooperating gear and rack elements, arms rigidly connecting said material moving element with said gear element, and means to reciprocate the gear and rack elements and to rotate said gear to load and unload 'said material moving element.

19. In a' loading machine, a bodily movable supporting frame, a material moving element, a paii' of cooperating movableJ members adapted to give. said material moving element a rectilinear forward and rearward and an angular swinging movement, both movable simultaneously to cause said firstmentioned movement and one stationary and the other, angu'larly movable to cause said last mentioned movement), means to hold the former element stationary, and a pivoted arm rigidly connected to one of said cooperating members and said material moving element.

20. In a loading machine, a bodily mov-- able-,supporting frame, a material moving element, and means for giving said element a rectilinear forward and rearward movement and a swinging movement over the machine to dumping position comprising cooperating forwardly and rearwardly movable members, one of which isangularly movable relative to the other, a pivoted arm rigidly connected to said first mentionedl member, and a single power means to cause said movements.

21. In a loading machine, a bodilyl movable supporting frame, a material moving element in the form of a shovel, means for giving the said element a rectilinear forward and rearward movement and a swinging movement over the machine to dumping position, comprising a pair of cooperating members in the form of a gear and rack, said rack being adapted to move rearwardly and forwardly on said supporting frame, means to hold said rack stationary and to release the same to permit movement thereof, said gear being adapted to mesh with said rack, and an arm rigidly connected to said gear and to said material moving element, and a single power means for causing .both simultaneous and relative. movement of said gear andrack.

22, In a loading machine, material moving means, means for actuating the same including a plurality of relatively movable elements one of which is secured to said material moving means, and means carried by one of said elements for positively preventing movement therebetween.

Amembers adapted to actuate'said material moving element, and a common means for effecting simultaneous and independent movement of said movable members.

25. Ina loading machine, a bodily mov-. able supportingframe, a material moving element, ya pair .of cooperating movable members adapted to actuate said material moving element, means for -eecting simul\ taneous and independent movement of said movable members, and a single power meansto cause saidmovements'. A

' 2 6. Ima loading machine, a bodily movable supporting frame, a material moving element, cooperating gear and rack elements adapted to' actuate said material moving element, means to move said gear and rack elements simultaneously, and means to lock said rackJ element against movement for effecting an angular movement of `said gear element. f 1 l y 27. In a loading machine, a bodily movable supportingrframe, a material moving element, cooperating gear and rack elements adapted to actuate said material moving element, means to, lock said rack element against movement, and means movable with said `gear element to release said locking means.

- 28. In a loadin machine, a bodily movable supporting rame, a [material moving element, cooperating gear and rack elements adapted vto actuate said material moving element, means to lock said rack I elements.

iis

against movement, and means movable with said gear element to release said-locking means for effecting simultaneous movement of said gear and rack elements.

29. In a loading machine, a bodily movable supporting frame, a material moving element, and means for actuating said material moving element-including cooperating gear and rack elements, a crosshead movable with said gear element, and means for effecting movement of said elements including a lpiston and cylinder, the former being connected to said crosshead.

In testimony whereof I affix my signature.

ELMER Gr.` GARTIN. 

